Apparatus and method for service of an automotive automatic...

B - Operations – Transporting – 60 – S

Patent

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Details

B60S 5/00 (2006.01) F01M 11/04 (2006.01) F02B 77/04 (2006.01) F16H 57/04 (2010.01) F16N 31/00 (2006.01)

Patent

CA 2284059

A fail-safe transmission service machine (12) allows old ATF (32) to be pumped out of a transmission (10B) while the vehicle engine runs, and responsively pumps a matching volume of new ATF into the transmission so that dry running of the transmission can not occur. If the supply of new ATF (28) runs out or if power to the service machine (12) is interrupted, the machine reverts to closed loop fluid circulation for the transmission. A hydraulic rectifier (42) provides for universal connection of hoses (14, 16) between the transmission cooler (36) fluid circulation loop of the vehicle and the service machine (12). An alternative embodiment of the machine allows for similarly fail-safe exchange of power steering fluid (112) from a vehicle, and replacement of the old fluid with new power steering fluid.

Dispositif (12) à sécurité intégrée d'entretien d'une transmission. Ce dispositif pompe le fluide de transmission automatique (FTA) (32) usé hors de la transmission (10B) pendant que le moteur du véhicule tourne, et pompe au fur et à mesure un volume correspondant de FTA neuf dans la transmission de manière à éliminer tout risque de fonctionnement non lubrifié de la transmission. Si l'alimentation de FTA neuf (28) est épuisée ou si l'alimentation en énergie du dispositif d'entretien (12) est interrompue, le dispositif retourne à un mode de circulation en circuit fermé de la transmission. Un rectificateur hydraulique (42) assure un raccordement universel des tuyaux (14, 16) entre le circuit de circulation du fluide du refroidisse (36) de transmission du véhicule et le dispositif d'entretien (12). Un mode de réalisation différent du dispositif permet d'opérer l'échange du fluide (112) de la servodirection d'un véhicule avec une sécurité intégrée similaire et le remplacement du fluide usé par du fluide de servodirection neuf.

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